/**
 * Copyright (c) Huawei Technologies Co., Ltd. 2023-2023. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef __AICPU_HCCL_REDUCE_SCATTER_H__
#define __AICPU_HCCL_REDUCE_SCATTER_H__

#include "aicpu_hccl_algorithm.h"

class AicpuHcclReduceScatter : public AicpuHcclAlgorithm {
public:
    explicit AicpuHcclReduceScatter(AicpuComContext *ctx) : AicpuHcclAlgorithm(ctx) {}
    ~AicpuHcclReduceScatter() override = default;

    HcclResult RunAlgorithm(HcclReduceOp opType, void *sendBuffer, void *recvBuffer, u64 dataCount,
        HcclDataType dataType, u64 strideLen = 0, AivAicpuOpParam *nextTask = nullptr) override;

private:
    HcclResult RunReduceScatterWriteMode(HcclReduceOp opType, void *sendBuffer, void *recvBuffer, u64 dataCount,
        HcclDataType dataType, u64 strideLen);
    HcclResult RunReduceScatterReadMode(HcclReduceOp opType, void *sendBuffer, void *recvBuffer, u64 dataCount,
        HcclDataType dataType);

    std::vector<Slice> PrepareMeshSlice(u64 dataSize, uint32_t rankNum);
    HcclResult RunDeterministicReduceScatter(HcclReduceOp opType, void *sendBuffer, void *recvBuffer, u64 dataCount,
        HcclDataType dataType, u64 strideCount);
    HcclResult RunDeterministicReduceScatterLocal(HcclReduceOp opType, void *sendBuffer, void *recvBuffer, u64 dataCount,
        HcclDataType dataType, u64 strideCount);
    HcclResult RunCurrentDeterministicReduceScatter(HcclReduceOp opType, uint8_t *curInputPtr, uint8_t *curOutputPtr,
        u64 strideSize, u64 curSize, HcclDataType dataType);

    // 910_93
    HcclResult GenRingTask(HcclReduceOp opType, u64 sndAddr, u64 rcvAddr, u64 curSize, u64 scatterSize,
        HcclDataType dataType, uint32_t streamId, bool isClockwise, uint32_t step) const;
    HcclResult RunDoubleRingReduceScatter(HcclReduceOp opType, u64 sendBuffer, u64 recvBuffer,
        u64 dataCount, HcclDataType dataType) const;
    HcclResult RunSwitchReduceScatter(HcclReduceOp opType, u64 sendBuffer, u64 recvBuffer, u64 dataCount,
        HcclDataType dataType) const;
};

#endif
